The Dagukou Fort was built in the Jiajing period of the Ming Dynasty, the purpose of which was to prevent the Japanese and ensure the safety of the Haihe River and Jinjing Basin.

In the 21st year of Jiaqing (1816), the Qing government built a circular fort on the north and south banks of Dagukou in order to strengthen the coastal defense of Tianjin Gate and protect the security of the capital.

After expansion, at this time, the Qing government built five forts of "Wei", "Zhen", "Hai", "Gate" and "Gao" on the north and south banks of the Haihe River, and built a "stone gap" fort on the stone wall on the north bank of the Haihe River.

These six batteries, three in the north and three in the south, each fort has at least three main guns, all of which are heavy guns of more than 8,000 catties.

Around these 6 large forts, 25 small forts were also built, and the Dagu artillery group had a total of more than 260 iron cannons and copper cannons of various sizes.

Then, 60 miles upstream of the Haihe River, 30 miles away from Jinmen City, Shuanggang, 13 forts were built, and 81 large and small artillery pieces were placed.

The height of these forts is roughly 10 to 17 meters, and the circumference of the base is 182 to 224 meters.

Even if the battery is hit by an enemy ship's shell, it can only form a crater, and will not produce a large amount of debris sputtering, causing secondary damage.

After decades of construction by the Qing government, at this time, the Dagu Fort Group has formed a complete three-dimensional military defense system.

It is the first of the three major forts of the Qing Dynasty and coastal defense, and is Prince Gong Yi? It is praised as 'the world's first coastal defense'.

On February 4, when Luo Rongguang was ordered to lead the Dagu artillery to garrison Tangshan, only two sentry artillery guards were left to guard the forts and military depots and other important places.

Before Luo Rongguang left, Xiong Kaiyu from the Dagu Military Station made a surprise visit and proposed that the recruits of the anti-Japanese army could temporarily garrison the fort and defend the mouth of the Haihe River just in case.

Regarding Xiong Kaiyu's proposal, to be honest, Luo Rongguang didn't really care.

The important role of the Dagu Fort was to blockade the mouth of the Haihe River, prevent the enemy ships from going upstream, and attack Jinmen, an important town in Zhili nearly 100 miles inland to the west.

Then go against the current to Yanjing.

At this time, the Haihe River was frozen, and even if the Japanese ships really came, they would fill the ships with shells and give them a month to bomb at will, just blowing up the ice, they would be exhausted to death.

Since it was impossible to use the waterway to attack Jinmen, the Japanese fleet completely lost the significance of capturing the Dagukou Fort.

Moreover, if the Japanese army wanted to choose a landing operation, they could completely choose any coast around Jinmen where there were no batteries and no garrisons to land.

There is no need to hold on to the hard bone of Dagukou, and it is not pleasant to find yourself.

However, although Luo Rongguang understood the reason, since Xiong Kaiyu took the initiative to ask for help, coupled with the bad news of Shanhaiguan, Luo Rongguang could not refuse the determination of these anti-Japanese soldiers to invite the battle, so he sent a telegram to Wang Wenshao to ask for permission.

Wang Wenshao read the telegram, almost did not hesitate, and happily nodded in agreement.

In Wang Wenshao's view, the Dagu military station of the anti-Japanese army has now almost been connected with the Beiyi 'high' character fort.

After the Shanhaiguan army was completely annihilated, the 2,000 recruits of the anti-Japanese army and the Dagu military station were assigned to the Dagu Fort, which was the most reasonable decision.

At this time, the battery was empty, so it was logical to put them in first, and then merge them later.

After getting permission, Xiong Kaiyu filled all the 2,000 new troops into the 6 large forts and 25 small forts at Dagukou.

Then, the people near the Dagu Fort entered the endless winter thunder mode.

Starting at 5 o'clock in the morning every day, I first got up and ticked and ticked, and then a hundred cannons fired in unison, catching the shelling targets that had been placed on the southern ice of the coastline last night, and bombing with great intensity.

This bombing was an intermittent whole day, until the night, and torches were lit to blow up the overhead fires on the ice, and the extinction was not extinguished or collected.

Not only did the people in the vicinity secretly curse and curse and be miserable, but even the Western cargo ships unloading on the ice in the Xingang area were trembling, for fear that these artillerymen would smash the projectiles and hit the north.

On February 8th, Liu's seventeen-year-old nephew, Xiucai Gong, who looks like a little white face, came to see his cousin Luo on New Year's Day.

When he came, the batteries of the anti-Japanese army were pulling artillery shells from the military treasury at the edge of the General Army's mansion.

The soldiers of the anti-Japanese army saw this rabbit in a sedan chair, and from the big mouth of Luo Huayun, the head of the military treasury, they knew some secrets.

So when the Liu family invited a table of relatives to sit on the table, before they moved the two chopsticks, Luo Feng'er and the little cousin just glanced at each other, and they didn't have time to show a trace of friendship.

"Boom!"

The Beiyi Fort next to it has changed the old tradition of single-shot slow fire today, and has become a hundred cannons firing in unison, exploding all over the sky.

At that time, it scared the hope of the Liu family's future, and the chopsticks in the hand of the talented rabbit fell on the table, his little face was pale, his body was trembling, and his pants were even more soaked.

The reason why Xiong Kaiyu desperately trained his soldiers to fire artillery was that he really didn't think about the Japanese fleet shelling Dagu before, he was preparing in advance for the future Battle of Lushun.

He Changying's many arrangements made him, the intelligence leader of the anti-Japanese army, confused, and couldn't understand the clouds and mountains and fog, but this did not affect him in the slightest to do various actions according to He Changying's instructions.

For example, in the case of Dagu Fort, He Changying sent back a secret letter before the fall of Shanhaiguan, which mentioned this matter.

For example, if the Dagu artillery is transferred from afar, it is necessary to solicit temporary defense batteries, at least take the northern artillery group in hand, and train the artillery diligently. ’

A few days ago, after learning the bad news of Tangshan, the imperial court really mobilized the Dagu artillery to enter Tangshan north, and the anti-Japanese army took the opportunity to master the Dagu fort group.

However, on February 15, Liu Kunyi led the mountains and seas to return to Tangshan with a great victory.

And the military strength and composition were reported.

Liu Kun's first 1156 people (before entering the Luanzhou coal mine, the prisoners of the original Liu Kun 1st who surrendered to the Japanese army in 768 were pardoned by Liu Kun and reorganized into the army).

Lu Dongjun Wang Company 3, 1513 people.

Lu Yong, Mei Dongyibu, 418 people.

96 Thunder Army.

There are 31 flag guards stationed at Shanhaiguan.

He Changying's anti-Japanese army, Xu Bangdao's Gongwei army, Jia Qisheng's Shengjun Renzi army, and Xia Qingyun's Luyu defense army were combined into the 4th regiment, 3rd battalion and 3rd company of the anti-Japanese army, with a total of 8,639 people.

As soon as this call came out, Jingshi was speechless for a while.

The tens of thousands of Beiyang troops entrenched in Lushun have not yet figured out a clue, but now it is good, plus the new recruits in Dagu, Beiyang has another heavy army group with more than 10,000 people!

And through the comparison of troops, people who understand it can see at a glance who fought this great customs victory.

It's the anti-Japanese army again, and He Changying!

Therefore, when He Changying decided to draw out the 2nd Regiment of troops to go south to Dagu, Jinmen, and join forces with the recruits stationed in Dagu Fort to form the Jinmen Brigade.

The 'well-intentioned people' of the Qing Dynasty began to be uncalm.

If He Changying's goal is successfully realized, the Jinmen Brigade of the Anti-Japanese Army will have nearly 6,000 troops, sitting on the Dagu Fort, the gateway to Tianjin and Beijing, in addition to the Lushun Military Port and Weihai Weijun Port, the third artillery group of the Qing Dynasty.

And there is also the Beitang Fort thirty miles to the north, which is He Changying's 'hometown camp'!

The artillery fire of the three major fortresses of the Qing Dynasty, except for the one occupied by the Japanese army, He Changying's anti-Japanese army will master two of them, how can it not make people vigilant?